Patents by Inventor David C. MacRitchie

David C. MacRitchie has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Suture package
    Patent number: 4168000
    Abstract: A catgut suture package is disclosed which upon opening exposes the looped end of a catgut suture. The suture loop is directly dispensed from the package leaving the label intact within the envelope.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: September 18, 1979
    Assignee: American Cyanamid Company
    Inventor: David C. MacRitchie
  • Suture package
    Patent number: 4069912
    Abstract: A surgical suture label having a needle protection flap is disclosed which permits direct dispensing of the suture. An envelope having a tearing notch and a tear angle guideline across the face of the envelope is also disclosed. When the envelope is torn from the tear notch along the guideline, the needle protection flap is exposed for direct dispensing of the suture.
    Type: Grant
    Filed: March 15, 1977
    Date of Patent: January 24, 1978
    Assignee: American Cyanamid Company
    Inventors: Seymour Black, David C. MacRitchie